Safe laser for brown skin, what you actually need to know.

Why so many of us get turned away

If you have brown or Black skin, you've probably heard one of two things at a clinic: “sorry, we can't treat your skin tone,” or worse, nothing at all — just a burn or a patch of darker pigment that took months to fade.

It happens constantly, and it isn't because laser can't work on darker skin. It's because the clinic's machine wasn't built for it, or nobody on the team was trained to set it safely. For years the industry standard was a laser tuned for pale skin and coarse dark hair — a combination that works beautifully on Fitzpatrick I–III and can genuinely harm Fitzpatrick V–VI. So rather than learn the difference, a lot of places simply put up a wall: “we don't do dark skin.”

That's the gap this clinic was built to close. So let's go through the technology honestly, because once you understand why certain machines are risky, you'll know exactly what to ask for — here or anywhere.

IPL, diode, Alexandrite, Nd:YAG — in plain English

All hair removal light works the same way: the light is absorbed by the dark pigment (melanin) in your hair, turns to heat, and damages the follicle so it stops growing. The whole game is getting that heat into the hair without dumping it into the skin — and on darker skin, the skin is full of melanin too. The wavelength of the light decides who wins.

IPL (Intense Pulsed Light) is the odd one out: it isn't a laser at all. It's a broad flash of many wavelengths at once, like a camera flash through a filter. Some of that light helps; a lot of it is the wrong wavelength and gets absorbed by skin pigment. On pale skin that's manageable. On brown skin it's the single biggest cause of laser burns and dark marks — and, frustratingly, it's also the least effective. Most “£99 for six sessions” deals are IPL.

Alexandrite (755nm) is a real laser and a very good one — on the right skin. Its short wavelength is hungrily absorbed by melanin, which makes it fast and powerful on pale skin with dark hair. That same hunger is the problem on brown skin: it can't tell the melanin in your hair from the melanin in your skin, so it risks burning the surface.

Diode (around 800–810nm) sits in the sweet spot. Its longer wavelength travels deeper, down to where the follicle lives, and is far less interested in the pigment near the surface. Pair it with contact cooling and you can treat brown skin effectively and safely. This is the laser we use.

Nd:YAG (1064nm) is the longest wavelength of all. It bypasses surface pigment almost entirely, which makes it the safest option for the very darkest skin (Fitzpatrick VI). It can be a little more uncomfortable and sometimes needs more sessions on fine hair, but for the deepest skin tones it's an excellent tool, and a good clinic knows when to reach for it.

Which system suits which skin

Why an 800nm diode is the right tool for brown skin

Our laser is a Venus Velocity 800nm diode with sapphire contact cooling. In practice that means three things working together: a wavelength deep enough to reach the follicle but not so short that it cooks the surface; a chilled sapphire tip that holds the skin at around 5°C while the pulse fires, monitored a thousand times a second; and the ability to dial the energy down and the pulse length up for darker skin. That combination is what turns “laser” from a risk into a routine, comfortable treatment.

The settings that actually keep brown skin safe

This is the part most adverts skip, because it's not glamorous — but it's where safety actually lives. On Fitzpatrick V–VI we work deliberately gentle:

• Lower energy (fluence). Around 4 J/cm² on the darkest skin, versus 6–8 on lighter skin. Less heat, more margin.
• Longer, split pulses. The energy is delivered slowly — roughly 100–170ms, spread across several sub-pulses — so heat builds in the hair and disperses from the skin between bursts.
• A single, careful pass. No stacking, no double-passing an area to “make sure” — that's how skin gets overheated.
• A longer patch-test window. We wait two to four weeks after a patch test before treating, rather than the 48-hour minimum, so any delayed reaction shows up before we treat a whole area.

None of this is exotic. It's just slower, more conservative, and built around your skin rather than the clinic's schedule — and it's the difference between a result and a scar.

What to ask before you book anywhere

You don't need to become an expert. Four questions will tell you almost everything:

• “Is your machine a diode or Nd:YAG laser, or IPL?” (You want the first two.)
• “Have you treated Fitzpatrick V–VI skin before, regularly?”
• “Do you patch test and wait before treating?”
• “Who actually performs the sessions — the same trained person each time?”

If the answers are vague, walk away. If they're specific and confident, you've found somewhere that respects your skin.

How we do it at Mikki's

Treating darker skin well is the reason this clinic exists, not an add-on. Every laser course is performed by the same trained practitioner from start to finish, on a diode built for the job, after a free consultation and a proper patch test — with independent Laser Protection Adviser oversight behind it. We've delivered over 17,000 treatments at one address in Aldgate since 2019, and we hold a 4.97-star average across 1,449 reviews, a good number of them from people who'd been turned away somewhere else first. If that's you, book a free consultation — no pressure, just an honest look at your skin and a plan. You can also read more on our laser for darker skin page.